1 #include "libpldm/base.h" 2 #include "libpldm/bios.h" 3 #include "libpldm/pdr.h" 4 #include "libpldm/platform.h" 5 6 #include "common/utils.hpp" 7 #include "dbus_impl_pdr.hpp" 8 #include "dbus_impl_requester.hpp" 9 #include "host-bmc/dbus_to_event_handler.hpp" 10 #include "host-bmc/dbus_to_host_effecters.hpp" 11 #include "host-bmc/host_pdr_handler.hpp" 12 #include "invoker.hpp" 13 #include "libpldmresponder/base.hpp" 14 #include "libpldmresponder/bios.hpp" 15 #include "libpldmresponder/fru.hpp" 16 #include "libpldmresponder/platform.hpp" 17 #include "xyz/openbmc_project/PLDM/Event/server.hpp" 18 19 #include <err.h> 20 #include <getopt.h> 21 #include <poll.h> 22 #include <stdlib.h> 23 #include <sys/socket.h> 24 #include <sys/types.h> 25 #include <sys/un.h> 26 #include <unistd.h> 27 28 #include <sdeventplus/event.hpp> 29 #include <sdeventplus/source/io.hpp> 30 31 #include <cstdio> 32 #include <cstring> 33 #include <fstream> 34 #include <iomanip> 35 #include <iostream> 36 #include <iterator> 37 #include <memory> 38 #include <sstream> 39 #include <stdexcept> 40 #include <string> 41 #include <vector> 42 43 #ifdef OEM_IBM 44 #include "libpldmresponder/file_io.hpp" 45 #endif 46 47 constexpr uint8_t MCTP_MSG_TYPE_PLDM = 1; 48 49 using namespace pldm::responder; 50 using namespace pldm; 51 using namespace sdeventplus; 52 using namespace sdeventplus::source; 53 using namespace pldm::state_sensor; 54 55 static Response processRxMsg(const std::vector<uint8_t>& requestMsg, 56 Invoker& invoker, dbus_api::Requester& requester) 57 { 58 59 Response response; 60 uint8_t eid = requestMsg[0]; 61 uint8_t type = requestMsg[1]; 62 pldm_header_info hdrFields{}; 63 auto hdr = reinterpret_cast<const pldm_msg_hdr*>( 64 requestMsg.data() + sizeof(eid) + sizeof(type)); 65 if (PLDM_SUCCESS != unpack_pldm_header(hdr, &hdrFields)) 66 { 67 std::cerr << "Empty PLDM request header \n"; 68 } 69 else if (PLDM_RESPONSE != hdrFields.msg_type) 70 { 71 auto request = reinterpret_cast<const pldm_msg*>(hdr); 72 size_t requestLen = requestMsg.size() - sizeof(struct pldm_msg_hdr) - 73 sizeof(eid) - sizeof(type); 74 try 75 { 76 response = invoker.handle(hdrFields.pldm_type, hdrFields.command, 77 request, requestLen); 78 } 79 catch (const std::out_of_range& e) 80 { 81 uint8_t completion_code = PLDM_ERROR_UNSUPPORTED_PLDM_CMD; 82 response.resize(sizeof(pldm_msg_hdr)); 83 auto responseHdr = reinterpret_cast<pldm_msg_hdr*>(response.data()); 84 pldm_header_info header{}; 85 header.msg_type = PLDM_RESPONSE; 86 header.instance = hdrFields.instance; 87 header.pldm_type = hdrFields.pldm_type; 88 header.command = hdrFields.command; 89 auto result = pack_pldm_header(&header, responseHdr); 90 if (PLDM_SUCCESS != result) 91 { 92 std::cerr << "Failed adding response header \n"; 93 } 94 response.insert(response.end(), completion_code); 95 } 96 } 97 else 98 { 99 requester.markFree(eid, hdr->instance_id); 100 } 101 return response; 102 } 103 104 void printBuffer(const std::vector<uint8_t>& buffer) 105 { 106 std::ostringstream tempStream; 107 tempStream << "Buffer Data: "; 108 if (!buffer.empty()) 109 { 110 for (int byte : buffer) 111 { 112 tempStream << std::setfill('0') << std::setw(2) << std::hex << byte 113 << " "; 114 } 115 } 116 std::cout << tempStream.str().c_str() << std::endl; 117 } 118 119 void optionUsage(void) 120 { 121 std::cerr << "Usage: pldmd [options]\n"; 122 std::cerr << "Options:\n"; 123 std::cerr 124 << " --verbose=<0/1> 0 - Disable verbosity, 1 - Enable verbosity\n"; 125 std::cerr << "Defaulted settings: --verbose=0 \n"; 126 } 127 128 int main(int argc, char** argv) 129 { 130 131 bool verbose = false; 132 static struct option long_options[] = { 133 {"verbose", required_argument, 0, 'v'}, {0, 0, 0, 0}}; 134 135 auto argflag = getopt_long(argc, argv, "v:", long_options, nullptr); 136 switch (argflag) 137 { 138 case 'v': 139 switch (std::stoi(optarg)) 140 { 141 case 0: 142 verbose = false; 143 break; 144 case 1: 145 verbose = true; 146 break; 147 default: 148 optionUsage(); 149 break; 150 } 151 break; 152 default: 153 optionUsage(); 154 break; 155 } 156 157 /* Create local socket. */ 158 int returnCode = 0; 159 int sockfd = socket(AF_UNIX, SOCK_SEQPACKET, 0); 160 if (-1 == sockfd) 161 { 162 returnCode = -errno; 163 std::cerr << "Failed to create the socket, RC= " << returnCode << "\n"; 164 exit(EXIT_FAILURE); 165 } 166 167 auto event = Event::get_default(); 168 std::unique_ptr<pldm_pdr, decltype(&pldm_pdr_destroy)> pdrRepo( 169 pldm_pdr_init(), pldm_pdr_destroy); 170 std::unique_ptr<pldm_entity_association_tree, 171 decltype(&pldm_entity_association_tree_destroy)> 172 entityTree(pldm_entity_association_tree_init(), 173 pldm_entity_association_tree_destroy); 174 auto& bus = pldm::utils::DBusHandler::getBus(); 175 dbus_api::Requester dbusImplReq(bus, "/xyz/openbmc_project/pldm"); 176 std::unique_ptr<HostPDRHandler> hostPDRHandler; 177 std::unique_ptr<pldm::host_effecters::HostEffecterParser> 178 hostEffecterParser; 179 std::unique_ptr<DbusToPLDMEvent> dbusToPLDMEventHandler; 180 auto dbusHandler = std::make_unique<DBusHandler>(); 181 auto hostEID = pldm::utils::readHostEID(); 182 if (hostEID) 183 { 184 hostPDRHandler = std::make_unique<HostPDRHandler>( 185 sockfd, hostEID, event, pdrRepo.get(), entityTree.get(), 186 dbusImplReq); 187 hostEffecterParser = 188 std::make_unique<pldm::host_effecters::HostEffecterParser>( 189 &dbusImplReq, sockfd, pdrRepo.get(), dbusHandler.get(), 190 HOST_JSONS_DIR, verbose); 191 dbusToPLDMEventHandler = 192 std::make_unique<DbusToPLDMEvent>(sockfd, hostEID, dbusImplReq); 193 } 194 195 Invoker invoker{}; 196 invoker.registerHandler(PLDM_BASE, std::make_unique<base::Handler>()); 197 invoker.registerHandler(PLDM_BIOS, std::make_unique<bios::Handler>()); 198 auto fruHandler = std::make_unique<fru::Handler>( 199 FRU_JSONS_DIR, pdrRepo.get(), entityTree.get()); 200 // FRU table is built lazily when a FRU command or Get PDR command is 201 // handled. To enable building FRU table, the FRU handler is passed to the 202 // Platform handler. 203 invoker.registerHandler(PLDM_PLATFORM, std::make_unique<platform::Handler>( 204 dbusHandler.get(), PDR_JSONS_DIR, 205 EVENTS_JSONS_DIR, pdrRepo.get(), 206 hostPDRHandler.get(), 207 dbusToPLDMEventHandler.get(), 208 fruHandler.get(), true)); 209 invoker.registerHandler(PLDM_FRU, std::move(fruHandler)); 210 211 #ifdef OEM_IBM 212 invoker.registerHandler(PLDM_OEM, std::make_unique<oem_ibm::Handler>()); 213 #endif 214 215 pldm::utils::CustomFD socketFd(sockfd); 216 217 struct sockaddr_un addr 218 {}; 219 addr.sun_family = AF_UNIX; 220 const char path[] = "\0mctp-mux"; 221 memcpy(addr.sun_path, path, sizeof(path) - 1); 222 int result = connect(socketFd(), reinterpret_cast<struct sockaddr*>(&addr), 223 sizeof(path) + sizeof(addr.sun_family) - 1); 224 if (-1 == result) 225 { 226 returnCode = -errno; 227 std::cerr << "Failed to connect to the socket, RC= " << returnCode 228 << "\n"; 229 exit(EXIT_FAILURE); 230 } 231 232 result = write(socketFd(), &MCTP_MSG_TYPE_PLDM, sizeof(MCTP_MSG_TYPE_PLDM)); 233 if (-1 == result) 234 { 235 returnCode = -errno; 236 std::cerr << "Failed to send message type as pldm to mctp, RC= " 237 << returnCode << "\n"; 238 exit(EXIT_FAILURE); 239 } 240 241 dbus_api::Pdr dbusImplPdr(bus, "/xyz/openbmc_project/pldm", pdrRepo.get()); 242 sdbusplus::xyz::openbmc_project::PLDM::server::Event dbusImplEvent( 243 bus, "/xyz/openbmc_project/pldm"); 244 auto callback = [verbose, &invoker, &dbusImplReq](IO& /*io*/, int fd, 245 uint32_t revents) { 246 if (!(revents & EPOLLIN)) 247 { 248 return; 249 } 250 251 // Outgoing message. 252 struct iovec iov[2]{}; 253 254 // This structure contains the parameter information for the response 255 // message. 256 struct msghdr msg 257 {}; 258 259 int returnCode = 0; 260 ssize_t peekedLength = recv(fd, nullptr, 0, MSG_PEEK | MSG_TRUNC); 261 if (0 == peekedLength) 262 { 263 std::cerr << "Socket has been closed \n"; 264 } 265 else if (peekedLength <= -1) 266 { 267 returnCode = -errno; 268 std::cerr << "recv system call failed, RC= " << returnCode << "\n"; 269 } 270 else 271 { 272 std::vector<uint8_t> requestMsg(peekedLength); 273 auto recvDataLength = recv( 274 fd, static_cast<void*>(requestMsg.data()), peekedLength, 0); 275 if (recvDataLength == peekedLength) 276 { 277 if (verbose) 278 { 279 std::cout << "Received Msg" << std::endl; 280 printBuffer(requestMsg); 281 } 282 if (MCTP_MSG_TYPE_PLDM != requestMsg[1]) 283 { 284 // Skip this message and continue. 285 std::cerr << "Encountered Non-PLDM type message" 286 << "\n"; 287 } 288 else 289 { 290 // process message and send response 291 auto response = 292 processRxMsg(requestMsg, invoker, dbusImplReq); 293 if (!response.empty()) 294 { 295 if (verbose) 296 { 297 std::cout << "Sending Msg" << std::endl; 298 printBuffer(response); 299 } 300 301 iov[0].iov_base = &requestMsg[0]; 302 iov[0].iov_len = 303 sizeof(requestMsg[0]) + sizeof(requestMsg[1]); 304 iov[1].iov_base = response.data(); 305 iov[1].iov_len = response.size(); 306 307 msg.msg_iov = iov; 308 msg.msg_iovlen = sizeof(iov) / sizeof(iov[0]); 309 310 int result = sendmsg(fd, &msg, 0); 311 if (-1 == result) 312 { 313 returnCode = -errno; 314 std::cerr << "sendto system call failed, RC= " 315 << returnCode << "\n"; 316 } 317 } 318 } 319 } 320 else 321 { 322 std::cerr 323 << "Failure to read peeked length packet. peekedLength= " 324 << peekedLength << " recvDataLength=" << recvDataLength 325 << "\n"; 326 } 327 } 328 }; 329 330 bus.attach_event(event.get(), SD_EVENT_PRIORITY_NORMAL); 331 bus.request_name("xyz.openbmc_project.PLDM"); 332 IO io(event, socketFd(), EPOLLIN, std::move(callback)); 333 event.loop(); 334 335 result = shutdown(sockfd, SHUT_RDWR); 336 if (-1 == result) 337 { 338 returnCode = -errno; 339 std::cerr << "Failed to shutdown the socket, RC=" << returnCode << "\n"; 340 exit(EXIT_FAILURE); 341 } 342 exit(EXIT_FAILURE); 343 } 344